Figure 1.

Influence of two different peppermint essential oil (PEO) concentrations on the proliferation kinetics of C. jejuni strain NCTC 11168. The applied 150 μg mL⁻¹ concentration of PEO was between the MIC (100 μg mL⁻¹) and MBC (400 μg mL⁻¹) values and proved to be sublethal. In contrast, the 50 μg mL⁻¹ concentration—used in the motility assay—was under the MIC value, having no drastic influence on proliferation.